:root {
  --bcg: #fff;
  --stroke: #303030;
  --fill: transparent;
}
.dark-theme {
  --bcg: linear-gradient(to bottom, #000000, #00000099),
    url("https://i.pinimg.com/originals/f5/f2/74/f5f27448c036af645c27467c789ad759.gif");
  --stroke: #fff;
  --fill: yellow;
}
.dark {
  background: transparent;
  margin-right: auto;
}
svg {
  width: 3rem;
  position: fixed;
  cursor: pointer;
  box-shadow: 1px 1px 5px #00000025;
  border-radius: 50%;
  padding: 10px;
  bottom: 0;
  z-index: 3;
  background: var(--bcg);
  float: left;
  margin: 10px 10px;
  fill: var(--fill);
  stroke: #000;
}
p {
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
}
h2,
span {
  font-family: sans-serif;
  font-weight: bold;
}
h2 {
  user-select: none;
  font-size: 2.5rem;
  color: white;
}
h4 {
  font-weight: 400;
  color: var(--stroke);
}
iframe {
  height: 100%;
  background: var(--bcg) !important;
}
body {
  padding: 0;
  margin: 0;
  position: relative;
  transition: all 0.3s;
  background: var(--bcg);
  display: flex;
  flex-direction: column;
  align-items: center;
  background-size: cover;
  background-repeat: no-repeat;
}
a {
  padding-bottom: 20px;
  user-select: none;
}
hr {
  width: 90vw;
}
span {
  margin-left: 5px;
  background-color: #ffa31a;
  border-radius: 6px;
  height: 70%;
  color: black;
  padding: 5px;
}
.header {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 110px;
  background-color: black;
  border-radius: 10px;
  margin-top: 10px;
  padding: 10px;
  padding-right: 20px;
}
@media only screen and (max-width: 767px) {
  h2,
  span {
    font-size: large;
  }
  h4 {
    font-size: medium;
  }
  div {
    height: 60px;
  }
  span {
    height: 5px;
  }
}
a {
  color: royalblue;
}